Valid Names Results
Chionaspis corni Cooley, 1899 (Diaspididae: Chionaspis)Nomenclatural History
- Chionaspis corni Cooley 1899: 15. Type data: UNITED STATES: Massachusetts, Reading, on Cornus paniculata, by A.H. Kirkland. Lectotype, female, by subsequent designation (LiuKoRh1989,30). Type depository: Washington: United States National Entomological Collection, U.S. National Museum of Natural History, District of Columbia, USA; accepted valid name Illustr.
Common Names
- cochenille du cornouiller MawFoHa2000
- dogwood scale Blicke1965 Koszta1963
Ecological Associates
Hosts:
Families: 4 | Genera: 4
- Adoxaceae
- Viburnum | MillerDa2005
- Cornaceae
- Cornus | Koszta1963 MillerDa2005
- Cornus alternifolia | DietzMo1916a
- Cornus amomum | Koszta1963
- Cornus asperifolia | Koszta1963
- Cornus florida | Britto1923 Koszta1963 | (= Cornus candidissima)
- Cornus obliqua | LiuKoRh1989
- Cornus oblonga | Cooley1899 | (= Cornus paniculata)
- Cornus racemosa | Koszta1963
- Cornus sanguinea | Koszta1963
- Cornus sericea | LiuKoRh1989 | (= Cornus stolonifera)
- Grossulariaceae
- Ribes | Borchs1966 MillerDa2005
- Lauraceae
- Lindera | MillerDa2005
Foes:
Families: 1 | Genera: 2
- Aphelinidae
- Aphytis diaspidis | Koszta1963
- Encarsia | Koszta1963 | (= Prospaltella )
Geographic Distribution
Countries: 2
- Canada
- Ontario | King1901h MillerDa2005
- United States
- California | MillerDa2005 Takagi1985
- Connecticut | Britto1920 MillerDa2005
- Idaho | MillerDa2005
- Illinois | LiuKoRh1989 MillerDa2005
- Indiana | Dougla1912 MillerDa2005
- Kansas | Dean1909 MillerDa2005
- Louisiana | MillerDa2005
- Louisiana | Miller2005
- Maryland | Koszta1996 MillerDa2005
- Massachusetts | Cooley1899 MillerDa2005
- Michigan | LiuKoRh1989 MillerDa2005
- Mississippi | MillerDa2005
- New Jersey | Koszta1996
- New York | FeltMo1928 MillerDa2005
- Ohio | Koszta1963 MillerDa2005
- Pennsylvania | MillerDa2005 Trimbl1928
- Utah | MillerDa2005 Takagi1985
- Virginia | LiuKoRh1989
- Wisconsin | MillerDa2005 SeveriSe1909
Keys
- MillerDa2005: pp.29-31 ( Adult (F) ) [Field Key to Economic Armored Scales]
- MillerDa2005: pp.20-21 ( Adult (F) ) [Armored Scales]
- Gill1997: pp.76 ( Adult (F) ) [Key to California species of Chionaspis]
- Koszta1996: pp.440 ( Adult (F) ) [Key to species of Chionaspis]
- BullinKoJi1989: pp.136 ( Adult (M) ) [Key to 17 adult male morphs of 12 species of North American Chionaspis]
- LiuKoRh1989: pp.17 ( Adult (F) ) [Key to the species of Chionaspis in North America]
- Koszta1963: pp.62 ( Adult (F) ) [Key to species of Chionaspis]
- McKenz1956: pp.30 ( Adult (F) ) [Key to species of Chionaspis]
- Ferris1942: pp.50 ( ) [Key to species of Chionaspis]
- Britto1923: pp.362 ( Adult (F) ) [Key to species of Chionaspis]
- MacGil1921: pp.331 ( Adult (F) ) [Key to species of Chionaspis]
- Lawson1917: pp.260 ( Adult (F) ) [Key to species of Chionaspis in Kansas]
- DietzMo1916a: pp.264 ( Adult (F) ) [Key to Chionaspis species of Indiana]
- Sander1904a: pp.43 ( Adult (F) ) [Key to Chionaspis species of Ohio]
- Cooley1899: pp.10 ( Adult (F) ) [Key to species of Chionaspis]
Remarks
- Systematics: "Among the North American species in this genus, this species is very close to C. ortholobis in several respects such as the arrangement and number of dorsal macroducts. However, it is easy to distinguish this species from others as soon as the most distinctive character is recognized, namely, the appearance of the median lobes. In C. corni their inner margins are parallel about half of their length, and then separated, and the strongly divergent markings are long and straight in typical specimens (Lie et al., 1989)."
- Structure: Scale of female elongate, broadening posteriorly, white, 1.8-2.5 mm long; exuviae orange yellow. Female spindle-shaped, expanded posteriorly, margins lobed, 1.2-1.3 mm long on slide (Kosztarab, 1963).
- Biology: Chionaspis corni overwinters as an egg (Houser, 1918). The dogwood scale overwinters as eggs on the bark (Houser 1918). Kosztarab (1963) found adult females in mid-September in Ohio. To our knowledge there is no detailed life history of this species. (Miller & Davidson, 2005).
- Economic Importance: Miller & Davidson (1990) list this insect as a pest. According to Baker (1972) this scale often damages ornamental dogwoods in the midwest. Weigel and Baumhofer (1948) reported that heavily infested branches of dogwoods were killed. This species is considered to be an occasional pest by Miller and Davidson (1990). (Miller & Davidson, 2005).
- General Remarks: Descriptions and illustrations by Cooley (1899) and by Liu et al. (1989). Detailed treatment of male morphs by Bullington et al. (1989).
Illustrations
Citations
- Arnett1985: economic importance, 241
- Baker1972: distribution, host, 109
- Blicke1965: taxonomy, 292, 305
- Britto1920: distribution, 64
- Britto1923: description, distribution, host, taxonomy, 362, 363
- BullinKoJi1989: description, distribution, host, illustration, taxonomy, 140-143
- Chambe1933: distribution, 96
- Cooley1899: description, distribution, host, illustration, taxonomy, 10, 15-16
- Dean1909: distribution, host, 269
- DietzMo1916a: description, distribution, host, taxonomy, 264, 267
- DodgeRi1943: distribution, host, 236
- Dougla1912: distribution, host, 187
- DowellGiJe2016: distribution, 115
- Englis1976: distribution, host, 20
- Felt1924: host, 152
- FeltMo1928: distribution, host, 198
- FeltRa1932: distribution, host, 202
- Fernal1903b: distribution, host, taxonomy, 215
- Ferris1937: description, distribution, host, illustration, taxonomy, SI-16
- Ferris1942: taxonomy, SIV-446:50
- Gill1997: description, distribution, economic importance, host, illustration, taxonomy, 77
- Harris1972: distribution, 74
- Hartma1916: distribution, host, 101
- Herric1935: distribution, host, 343
- Houser1918a: distribution, host, 290
- King1901h: distribution, host, 315
- King1902b: distribution, host, 61
- King1902d: distribution, host, 161
- KondoWa2022a: distribution, host, list, 14
- Koszta1963: distribution, host, 66-67
- Koszta1996: description, distribution, host, illustration, life history, taxonomy, 445-448
- Lawson1917: description, distribution, host, illustration, taxonomy, 260, 264-265
- Lindin1958: taxonomy, 366
- LiuKoRh1989: description, distribution, host, illustration, taxonomy, 27-31
- MacGil1921: distribution, host, taxonomy, 331
- MawFoHa2000: distribution, 44
- McCombDa1969: distribution, 1
- McKenz1956: description, distribution, host, illustration, taxonomy, 30, 93-97
- Miller2005: distribution, 485
- MillerDa1990: economic importance, taxonomy, 301
- MillerDa2005: description, distribution, economic importance, host, 106
- Nakaha1975: taxonomy, 201
- Nakaha1982: distribution, host, 17
- Osborn1903: taxonomy, 46
- PooleGe1997: distribution, 347
- SOC1931: distribution, host, 18
- Sander1904a: description, distribution, host, illustration, taxonomy, 43, 45
- Schmid1939: taxonomy, 157
- SeveriSe1909: distribution, host, 297
- Sheaff1930: distribution, host, 25
- SwaineHu1926: chemical control, distribution, host, 51
- SwanPa1972: distribution, host, 165
- Takagi1985: distribution, host, taxonomy, 16, 39
- TakagiKa1967: distribution, host, taxonomy, 30, 38
- Trimbl1928: distribution, host, 45
- WebsteBu1902: distribution, host, 113
- Weidha1968: distribution, host, 256
- Westco1973: distribution, host, 398
- Willia2017a: catalog, list of species, 221
